Infinite colorless manaInfinite creature tokensInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite mana creatures you control can produceInfinite creature sacrifice triggersInfinite untap of creatures
How it works
Activate Ashnod's Altar by sacrificing Hornet Queen, adding CC.
Activate Othelm by paying 2 and tapping it, returning Hornet Queen from your graveyard to the battlefield tapped.
Hornet Queen enters the battlefield, triggering itself and Intruder Alarm.
Resolve the Intruder Alarm trigger, untapping all creatures.
Resolve the Hornet Queen trigger, creating four 1/1 Insect creature tokens.
The Insect tokens enter the battlefield, triggering Intruder Alarm four times, untapping all creatures.